“…(+)‐Camphor ( 1 ), tert ‐butoxy bis(dimethylamino)methane, anhydrous DMF, 1‐isothiocyanato‐3,5‐bis(trifluoromethyl)benzene ( 6 ), p ‐toluidine hydrochloride ( 10 ), (1 S )‐(+)‐camphorquinone ( 16 ), dimethyl malonate ( 20 ), trans ‐β‐nitrostyrene ( 21 ), and 10% palladium on charcoal are commercially available (Sigma‐Aldrich, St. Louis, MO, USA). (1 S ,4 S ,3 E )‐3‐((Dimethylamino)methylene)‐1,7,7‐trimethylbicyclo[2.2.1]heptan‐2‐one ( 2 ), (1 S ,4 R ,3 E )‐3‐(hydroxyimino)‐1,7,7‐trimethylbicyclo‐[2.2.1]heptan‐2‐one ( 17 ), and (1 S ,2 R ,3 R ,4 R )‐3‐amino‐1,7,7‐trimethylbicyclo[2.2.1]heptan‐2‐ol ( 18 ) were prepared following the literature procedure.…”